Just wanted to inform anyone looking to fix an audio problem on a Gateway MX6440 Notebook after reinstalling the OS. At the time of this writing there is no support for this model on the website. The problem at hand is when you reinstall the OS with the supplied cd. There are no drivers on this disk.

This will provide the audio driver needed for the ati chipset.
I personnally had to install this driver before any others for it to work.
After download is complete, enter device manager to install the driver.
Use the option to install from a specific location.
Click Browse and navigate to where the file is located on your drive to